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Finding the Third Proportional to 20,160 and 28,197.56

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Solution

The third proportional to 20,160 and 28,197.56 is: 39,439.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160 : 28,197.56 = 28,197.56 : x
  2. Step 2: Convert to fraction form
    20,160/28,197.56 = 28,197.56/x
  3. Step 3: Cross multiply
    20,160x = 28,197.56 × 28,197.56
  4. Step 4: Simplify right side
    20,160x = 795,102,530.94
  5. Step 5: Solve for x
    x = 795,102,530.94/20,160
  6. Step 6: Final answer
    x = 39,439.61

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.